Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and method of manufacturing electrophotographic photosensitive member

An electrophotographic and photosensitive member technology, applied in optics, electrographics, instruments, etc., can solve the problem of inability to reduce contact stress and reduce potential stability, and achieve the effect of excellent potential stability

Active Publication Date: 2013-05-15
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In the electrophotographic photosensitive member disclosed in each of Patent Document 2 and Patent Document 3 including a surface layer containing a siloxane-modified resin having a siloxane structure in the molecular chain, sustained contact stress reduction and repeated use cannot be achieved The balance between potential stability when

Method used

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  • Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and method of manufacturing electrophotographic photosensitive member
  • Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and method of manufacturing electrophotographic photosensitive member
  • Electrophotographic photosensitive member, process cartridge, electrophotographic apparatus, and method of manufacturing electrophotographic photosensitive member

Examples

Experimental program
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Effect test

Embodiment 1

[0147] An aluminum cylinder having a diameter of 30 mm and a length of 260.5 mm was used as the conductive support.

[0148] Next, use 10 parts of SnO with a mixed solvent of 4 parts methanol and 16 parts methoxypropanol 2 Coated barium sulfate (conductive particles), 2 parts of titanium oxide (pigment for controlling resistance), 6 parts of phenolic resin, and 0.001 part of silicone oil (leveling agent), thereby preparing a conductive layer coating liquid.

[0149] The conductive layer coating liquid was applied onto the aforementioned aluminum cylinder by dip coating and cured (thermally cured) at 140° C. for 30 minutes, whereby a conductive layer having a film thickness of 15 μm was formed.

[0150] Next, 3 parts of N-methoxymethylated nylon and 3 parts of copolymer nylon were dissolved in a mixed solvent of 65 parts of methanol and 30 parts of n-butanol, thereby preparing an intermediate layer coating liquid.

[0151] The intermediate layer coating liquid was applied onto...

Embodiment 2 to 45

[0170] Electrophotographic photosensitive members were prepared in the same manner as in Example 1 except that the components [α], [β] and [γ] in the charge transport layer were replaced as shown in Table 3, and evaluated. It was confirmed that each of the resulting charge transporting layers included a region containing component [α] in a matrix containing components [β] and [γ]. Table 8 shows the results.

[0171] It should be noted that the weight average molecular weight of the polycarbonate resin C used as the component [β] was found as follows.

[0172] (C-5) / (C-7)=8 / 2:120,000

[0173] (C-1): 100,000

Embodiment 46 to 90

[0175] Electrophotographic photosensitive members were prepared in the same manner as in Example 1 except that the components [α], [β] and [γ] in the charge transport layer were replaced as shown in Table 4, and evaluated. It was confirmed that each of the resulting charge transporting layers included a region containing component [α] in a matrix containing components [β] and [γ]. Table 8 shows the results.

[0176] It should be noted that the weight average molecular weight of the polycarbonate resin C used as the component [β] was found as follows.

[0177] (C-5) / (C-7)=8 / 2:120,000

[0178] (C-2): 130,000

[0179] (C-3) / (C-5)=3 / 7:100,000

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Abstract

An electrophotographic photosensitive member comprises a charge-transporting layer which is a surface layer of the electrophotographic photosensitive member; wherein the charge-transporting layer has a matrix-domain structure having: a matrix comprising: at least one resin selected from the group consisting of a polycarbonate resin C and a polyester resin D; and at least one charge-transporting substance selected from the group consisting of a compound represented by the following formula (1) and a compound represented by the following formula (1'), and a domain comprising a polycarbonate resin A.

Description

technical field [0001] The present invention relates to an electrophotographic photosensitive member, a process cartridge, an electrophotographic apparatus, and a method of manufacturing an electrophotographic photosensitive member. Background technique [0002] As an electrophotographic photosensitive member mounted on an electrophotographic apparatus, an organic electrophotographic photosensitive member containing an organic charge generating substance (organic photoconductive substance) (hereinafter, referred to as "electrophotographic photosensitive member") is known. In the electrophotographic method, various members such as developer, charging member, cleaning blade, paper, and transfer member (hereinafter, also referred to as “contact member, etc.”) are brought into contact with the surface of an electrophotographic photosensitive member. Therefore, electrophotographic photosensitive members are required to reduce the occurrence of image deterioration due to contact s...

Claims

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Application Information

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IPC IPC(8): G03G5/05G03G5/06
CPCG03G5/14795G03G5/076G03G5/14791G03G5/0614G03G5/0578G03G5/0592G03G5/14773G03G5/14756G03G5/078G03G5/0596G03G5/0564G03G5/14769G03G5/06147G03G5/061473G03G5/047G03G5/05G03G5/06G03G21/18
Inventor 大垣晴信野口和范奥田笃村井潮志田和久姉崎隆志
Owner CANON KK
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